
Prime factors are those numbers that, when divided by 98, do not leave any remainder. This implies that the number 98 must be completely divisible by the number, which will be its factor.
The number 98 can be divided into factors of different smaller numbers. There are six factors of 98, out of which 98 is the largest.
The factors of 98 are: 1, 2, 7, 14, 49 and 98. These factors are positive integers. The pair of factors of 98 are: (1, 98), (2, 49), and (7, 14).
The prime factors of 98 are: 1, 2 and 7. 14 and 49 are not prime factors as they are also factorable numbers.
Negative factors of 98 are: -1, -2, -7, -14, -49 and -98. Prime factorization of 98 is 2 x 7 x 7 = 2 x 7²
The factors of 98 can be found by two methods – Prime factorization method and Long-division method.
The prime factorization method is the most common method to represent 98 or any other number. Its other form, the prime factor tree method, is a visual method to represent factors of 98. It helps in determining various prime factors of 98. A factor tree is not unique for a given number. Instead of expressing 98 as 2 x 49, we can express 98 as 2 x 7 x 7.
We need to divide 98 from the smallest number to the biggest number as shown-
Prime factorization of 98 using the prime factorization method is 2 x 7 x 7 = 2 x 72.
Example 1: What are the common factors of 98 and 49?
Solution:
The factors of 98 are 1, 2, 7, 14, 49 and 98.
The factors of 49 are 1, 7 and 49.
Thus, the common factors of 98 and 49 are 1, 7 and 49.
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